Sectional boiler.



A. A..- LANDO'N. SECTIONAL onn-3R, APPLICATION FILEDASEPTJ 4. 1913.

Patented June 20,

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ARCHER A. LANUO/V m-a ATTORNEY THE COLUMBIA PLANOURAPH cm. WASHINGTON, D. C.

A.- A. LANDON.

"'SECTIONAL BOILER. IKPPLICATJON FILED SEPT- 4. 1s.13..

Patented June 20,1916.

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9M 44M ATTORNEY I'm; COLUMBIA PLANDGRAPH c0., WASHINGTQN, D. c.

ARCHER A. LANDON, OF BUFFALO, NEW YORK, ASSIGNOR '10 AMERICAN RADIATOR COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY.

,sno'rIoNAL' BOILER.

Specification of Letters Patent. Patent d J 2% 1916 Application filed September 4, 1913. Serial N 0. 788,051.

To all whom it may concern Be it known that I, ARCHER A. LANDON, a citizen of the United States, residing at Bufialo, Erie county, in the State of New York, have invented certain new and useful Improvements in Sectional Boilers, of which the following is a full, clear, and exact specification.

My invention relates to improvements in down-draft boilers and the same has for its object more particularly'to provide a sectional downdraft boiler in which the sections may be easily produced and readily assembled to form a complete boiler.

Further said invention has for its object to provide a sectional down-draft boiler embodying a lower grate, and an upper grate having its bars formed as integral parts of the several sections which constitute the boiler.

Further said invention has'for its object to provide a sectional down-draft boiler in which the water circulation is more perfectly obtained by causing each boiler section to produce and circulate independently of the others, the steam generated therein.

Further said invention has for its object to provide a sectional down-draft boiler in which the upper grate sections, which are formed integrally with the boiler section, are so proportioned and spaced apart relative to each other that the same will supply the lower grate with coal of uniform size and maintain a bed of coal of uniform depth upon said lower grate. To the attainment of the aforesaid objects and ends my invention consists in the novel details of construction, and in the combination, connection and arrangement of parts hereinafter more fully described and then pointed out in the claims.

In the accompanying drawings forming part of this specification, wherein like numerals of reference indicate like parts-Figure 1 is a front view, partly in section, showing one form of sectional boiler constructed according to and-embodying my said invention; Fig. 2 is a central longitudinal section taken essentially on the line 22 of Fig 1; and Fig. 3 is a detail perspective view, partly broken away, and in section showlng several of the transverse members or bars with their lateral projections forming a part of the water grate.

In said drawings 10 designates the boiler as a whole comprising ,ajfront section 11, a rear section 12, and intermediate sections 13, 13. The front section 11 is provided with the usual flue doors 14;, fire door 15, for feeding fuel to the upper grate, slicing doors16 and 17, and ash pit door-18. The rear section 12 is provided with an opening 1 9 at its top for connection with a smoke pipe or stack, and adjacent to its base said rear section is provided with an opening 20 .to allow of the cleaning of the fines leading from the combustion chamber to the smoke outlet.

The forward intermediate sections 13, 13, 13 13 are provided about midway of their height with flat, hollow transverse members or ribs 21, 21 21, 21, respectively. Each of said hollow, transverse members or ribs is of less thickness than the thickness of the boiler section of which it forms a part, and has its frontand' rear sides vertical, and its upper edge terminating in a tapering top 22.

Upon the opposite sides of said hollow, transverse members or ribs are arranged forwardly and rearwardly extending projections 23, 23. The said projections are formed co-extensive in height with the height of said hollow, transverse members or ribs, and have their upper ends rounded at 24 and tapered slightly toward their lower caused to pass downwardly and burn below said water grate. As the volatile matter is liberated from the coal uponthe upper grate, the coal is caused to crumble or break into small pieces of uniform size and drop through the spacesin the upper grate when the fire is sliced thereon, and form a bed of incandescent fuel of uniform thickness upon said lower. grate.

'The boiler section 20, arranged immediately to the rear of the innermost transverse member or bar 13, is provided witha depending transverse watersection 27 which forms a rear wall forthe upper grate 26. At its lower forward-edge said depending water section 27 is provided with a series of laterally extending hollow projections 27,

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27 which correspond in shape and size to the projections 23, 23 upon the grate bars, and are arranged in register therewith, and the front boiler section 11 is provided with similar projections 11, 11

The boiler sections 20 and 20 to the rear of the boiler section 20 are provided with shorter depending vertical sections 28, 28 having recesses at their opposite upper edges between their contacting portions 29 29" forming vertical fines for the passage of heated gases from the combustion chamber 30 to the horizontal upper fines 31, 31 which connect at their upper ends with a central horizontal fiue 32 leading to the stack. Be-

low the upper grate 26, and adjacent to the base of the boiler, is provided a lower grate 33 which is of the usual construction comprising a series of pivoted grate bars 3 1, 34:, a sliding bar 35 connecting said grate bars 34, 34, and a lever 36 connected to said sliding bar 35 for actuating said grate bars 34L, 34.

The operation of the boiler is mainly obvious. It is to be noted, however, that by reason of the novel construction of water grate, the steam produced in each of the water grate bars is received and conducted by the sides of each boiler section to the top of the boiler, where the same is caused to mingle with the upgoing water or steam produced severally by the remainder of the boiler sections which have formed, as integral parts thereof, the said hollow water grate bars 23, 23. V

Further it is to be noted that by forming the hollow. transverse members or water grate bars 21, 21, 21, 21, integrally with certain of the boiler sections the depth of the grate may be easily increased or diminished by adding or removing the desired number of boiler sections intermediate the front section 11, and the section 20 which is provided with the depending wall section 27.

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

1. In a sectional boiler, the combination with a hollow boiler section, of a hollow grate bar formed integrally with said section and communicating with the interior thereof; said bar having alternately arranged narrow and Wide portions, said narrow portions being of less width than the width of said section and said wide portions being of substantially the same width as the width of said section, substantially as specified.

. 2. In a sectional boiler, the combination of a hollow boiler section, of a hollow member of less width than the width of said section formed integrally therewith and communicating with the interior thereof; said member having laterally extending projections, said member and said projections constituting a grate bar, the maximum width of said grate bar being substantially equal to the width of said section, substantially as specified.

3. In a sectional boiler, the combination of a hollow boiler section, of a hollow member of less width than the width of said. section formed integrally therewith and communicating with the interior thereof; "f

said member having oppositely disposed, laterally extending hollow projections; said member and said projections constituting a grate bar, the maximum width of said grate bar being substantially equal to the width of said section, substantially as specified.

4. In a sectional down-draft boiler, the combination of a plurality of hollow sections and an up-draft grate, with a series of narrow, vertically disposed, hollow bars, each of said bars being formed integrally with one of said sections and communica ing with the interior thereof and being pro vided with laterally extending hollow projections, said hollow bars forming a coking grate disposed above the up-draft grate, substantially as specified.

5. In a sectional down-draft boiler, the combination of a plurality of boiler sections and an up-draft grate, with a series of narrow, vertically-disposed, hollow bars each formed integrally at its ends with the sides of one of said boiler sections, and laterally extending hollow projections arranged vertically upon the opposite sides of said hollow bars and forming a coking grate disposed above said up-draft grate, substantially as specified.

6. In a sectional down-draft boiler, the combination of a plurality of boiler sections with a down-draft grate comprising a series of hollow, transverse members each formed integrally at its ends with the sides of said boiler sections and communicating therewith, a water section depending from one of said boiler sections to the rear of said down-draft grate and formed integrally with the rearmost of said hollow, transverse members and serving to separate the space above said down-draft grate from'the remainder of the interior of said boiler, an up-draft grate, disposed below said downdraft grate, comprising a series of pivotally supported members, and means for actuating said pivotally supported members, sub stantially as specified.

7. In a sectional down-draft boiler, the combination of a plurality of boiler sections with a down-draft grate comprising a series of hollow, transverse members each formed integrally at its ends with the sides of one of said boiler sections and communicating therewith, a. water section depending from one of said boiler sections to the rear of said down-draft grate and formed integrally with the rearmost of said hollow, said pivotally supported members, substan transverse members and serving to sepatially as specified.

rate the space above said down-draft grate Signed at the city of Bufi'alo, Erie county, from the remainder of the interior of said in the State of New York, this seventh day 15 boiler, and an up-draft grate, disposed beof August one thousand nine hundred and low said downiilraft grate, (fomprilsing a sethirteen.

ries o pivota y supporte mem ers having their points of support disposed in ver- ARCHER LANDON' tieal planes coinciding with the center of Witnesses:

the interval between said hollow down-draft LAURA E. WEBB,

grate members, and means for actuating RUFUS E. BOND.

copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents.

Washington, D. G." 

